Definition of crust in English:

noun

They gave their Great Niece the red carpet treatment, cooking up a feast of scones with jam and cream, fruit cake, sponge cake, Anzac biscuits and a genteel plate of sandwiches with the crusts cut off.

It was a classic British summer tea; small smoked salmon sandwiches with the crusts cut off; tiny scones with jam and cream the size of a 10p piece and miniature strawberry tarts.

And they all traipsed out for another round of triangular sandwiches with the crusts cut off and a wee cup of tea served in the best china.

It had taken us longer than expected to make the trip back and we were both a total mess with a thick layer of dirt crusting our clothes and flowers stuck in our hair, which was probably every where by now.

When I got tired of that I took up fire-gazing, watching the flames crusting the coals with rosy spark edgings.

Next morning the valley is crusted in frost as I find the turn-off and wind up 11 km through 135 bends, nine of them hairpins, to reach Snow Farm.

Origin

A custard was originally a pie. Spelled crustarde or custarde, this was an open pie that contained meat or fruit in a spiced or sweetened sauce thickened with eggs. Over time the name gradually came to be applied to the sauce rather than the pie itself. The origin of the word was Old French crouste ‘a crust’ from Latin crusta ‘rind, shell, crust’, which is also where our word crust (Middle English) comes from.